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/* Copyright (C) 2007-2008 The Android Open Source Project
**
** This software is licensed under the terms of the GNU General Public
** License version 2, as published by the Free Software Foundation, and
** may be copied, distributed, and modified under those terms.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
*/
#include "android/hw-events.h"
#include "android/utils/bufprint.h"
#include <stdlib.h>
#include <string.h>
typedef struct {
const char* name;
int value;
} EventInfo;
#define EV_TYPE(n,v) { "EV_" STRINGIFY(n), (v) },
#define BTN_CODE(n,v) { "BTN_" STRINGIFY(n), (v) },
#define KEY_CODE(n,v) { "KEY_" STRINGIFY(n), (v) },
#define REL_CODE(n,v) { "REL_" STRINGIFY(n), (v) },
#define ABS_CODE(n,v) { "ABS_" STRINGIFY(n), (v) },
#define END_CODE { NULL, 0 }
static const EventInfo _ev_types_tab[] =
{
EVENT_TYPE_LIST
END_CODE
};
static const EventInfo _key_codes_list[] =
{
EVENT_KEY_LIST
EVENT_BTN_LIST
END_CODE
};
static const EventInfo _rel_codes_list[] =
{
EVENT_REL_LIST
END_CODE
};
static const EventInfo _abs_codes_list[] =
{
EVENT_ABS_LIST
END_CODE
};
#undef EV_TYPE
#undef BTN_CODE
#undef KEY_CODE
#undef REL_CODE
#undef ABS_CODE
typedef const EventInfo* EventList;
typedef struct {
int type;
const EventInfo* table;
} EventCodeList;
static const EventCodeList _codes[] = {
{ EV_KEY, _key_codes_list },
{ EV_REL, _rel_codes_list },
{ EV_ABS, _abs_codes_list },
{ -1, NULL }
};
static EventList
eventList_findByType( int type )
{
int nn;
for (nn = 0; _codes[nn].type >= 0; nn++) {
if (_codes[nn].type == type)
return _codes[nn].table;
}
return NULL;
}
static int
eventList_getCount( EventList list )
{
int nn;
if (list == NULL)
return 0;
for (nn = 0; list[nn].name != NULL; nn++) {
/* nothing */
}
return nn;
}
static int
eventList_findCodeByName( EventList list,
const char* name,
int namelen )
{
if (namelen <= 0)
return -1;
for ( ; list->name != NULL; list += 1 ) {
if ( !memcmp(name, list->name, namelen) &&
list->name[namelen] == 0 )
{
return list->value;
}
}
return -1;
}
static char*
eventList_bufprintCode( EventList list,
int index,
char* buf,
char* bufend )
{
if (list == NULL)
return buf;
return bufprint(buf, bufend, "%s", list[index].name);
}
int
android_event_from_str( const char* name,
int *ptype,
int *pcode,
int *pvalue )
{
const char* p;
const char* pend;
const char* q;
EventList list;
char* end;
*ptype = 0;
*pcode = 0;
*pvalue = 0;
p = name;
pend = p + strcspn(p, " \t");
q = strchr(p, ':');
if (q == NULL || q > pend)
q = pend;
*ptype = eventList_findCodeByName( _ev_types_tab, p, q-p );
if (*ptype < 0) {
*ptype = (int) strtol( p, &end, 0 );
if (end != q)
return -1;
}
if (*q != ':')
return 0;
p = q + 1;
q = strchr(p, ':');
if (q == NULL || q > pend)
q = pend;
list = eventList_findByType( *ptype );
if (list == NULL) {
*pcode = -1;
} else {
*pcode = eventList_findCodeByName( list, p, q-p );
}
if (*pcode < 0) {
*pcode = (int) strtol( p, &end, 0 );
if (end != q)
return -2;
}
if (*q != ':')
return 0;
p = q + 1;
q = strchr(p, ':');
if (q == NULL || q > pend)
q = pend;
*pvalue = (int)strtol( p, &end, 0 );
if (end != q)
return -3;
return 0;
}
int
android_event_get_type_count( void )
{
return eventList_getCount( _ev_types_tab );
}
char*
android_event_bufprint_type_str( char* buff, char* end, int type_index )
{
return eventList_bufprintCode( _ev_types_tab, type_index, buff, end );
}
/* returns the list of valid event code string aliases for a given event type */
int
android_event_get_code_count( int type )
{
EventList list = eventList_findByType(type);
return eventList_getCount(list);
}
char*
android_event_bufprint_code_str( char* buff, char* end, int type, int code_index )
{
EventList list = eventList_findByType(type);
return eventList_bufprintCode(list, code_index, buff, end);
}
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